Here's a similar picture for SPARC from wikipedia: https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/SP...
That said building the first is a lot harder than scaling it up.
(That's right. ITER, which will cost more than $65 billion and take decades to build, can't run continuously!)
When you have no turbine or any other means to extract power from a heat source, none gets extracted. Do you need a source for that?